Cut the bread into 1 inch slices and grill, brushing olive oil on both sides of the bread. Once grilled, cut or tear bread into cubes and set aside.

Cut the tomatoes into cubes and set aside.

For the vinaigrette, whisk all the ingredients together.

In a large bowl, mix the tomatoes, cucumber, red pepper, red onion, basil, and capers. Season liberally with salt and pepper. Add the bread cubes and toss with the vinaigrette. Allow the flavors to blend for about an hour, then serve, garnished with basil sprigs.